[NotOverUnderated]

Hello,

For typical static meshes, the Navier stokes equations are written in an Eulerian formulation.

But I am not sure about meshes that have some parts that are rotating which are usually modeled using the sliding mesh technique.

Example:

Below is an example of a domain used to simulate the flow around a rotating rectangle object.



1) What is the forumlation name for such simulations? It is certainly not an Eulerian formulation because the inner region is rotating. On the other hand it is not like a Lagrangian formulation either.

Any help is very much appreciated.

Kind regards
ONESP-RO